an athlete completes one round of a circular track of diameter 200m in 40s . what will be the displacement at the 2min 20sec.
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Answered by
43
Question :
an athlete completes one round of a circular track of diameter 200m in 40s . what will be the displacement at the 2min 20sec.
Given :
Diameter of circular track = 200 m
Time taken for one round = 40 s
To Find :
Displacement in 2 min 20 s
Formula :
v =
where,
v : velocity
s : displacement
t : time
Solution :
2 min 20 s = 2 × 60 + 20
2 min 20 s = 120 + 20
2 min 20 s = 140 s
In 140 s athlete will complete 3 complete rounds around the circle.
So now 20 s are left.
In 20 s the althlete will be at exactly opposite point on the circle.
We know that minimum displacement will be it's diameter.
Displacement will be 200m.
Answered by
74
The required ans will be 200m.
Hope it will help uh . . . . 。◕‿◕。
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